Grain cleaning and grading machinery



N 1,620,865 March 15 1927 P.. D. BLACKDEN GRAIN CLEANING AND GRADING MACHINERY Filed March 2. 1923 3 She'ets`-Slvxeet 2 WTNESSES NVETR lacffclev,

Afro/Mfrs 3 Sheets-Sheet 3 n l w QN @.md

INVENTOR A TTHIIEYS March l5 1927.

f P. D. BLACKDEN GRAIN CLEANING 'AND GRADING MAcHImsmfy Filed March 2. 1923 vw/rmsssfs Patented Mar. 15, 19127.L

y0121,14. A. fisio-RSE, or SACRAMENTO; CALIFQRNIA.

f GiAINeLEANING *AND GRADING MACHINERY.

- "Application mediteren@ 1923:- sermif'No. 622,390.

The-*present invention relatesy to grain Cleaning fand grading machinery :especially 'designed' to removeWaterg'grass seedl and i vfother foul 'Seeds'r'omhpaddyrice.

@is i'n 'general simple and durable 'in 'construction, reliable and re'iieient` in operationl and v easy andinexpe'nsve fto' manufacture".

' Other f'objeets and Iladvantages.' 'of y'the iny'Ve'.ntion reside intertain' novel features' of construction, l eombir'ati'on and arrangement' of-parts which W'il'l'hehereinaftermore. fully: descrbedfand particularly pointedout 1n the l appendedelaims; referencelheing had to 'the accompanying drawingsf forming" part fot' L this1S19?Citi@ation,l and'invwhich';

' Figure 1 isy a View I inf'lohgitudinal Vertical` section of the preferred embodiment'offthe 'f-'inventiong-- '-1 f andY f partly ,elevation, off- 'the' f universal 'f iugml asian-'kende emmener view site end ofthe shaftfa'fhearing QBfeprovided.

'lAleyzQQ isV fixed to'ftheflowe'rside of the V.ft-hereof I f Figure 5 1s "a 1 mately the upperfhalf thereof, "preferably" consi'stsfofff-an fimperforate' fmet'alcasing-13,

" .f "Sisting 'of a-'sreen '149 The-screen '145 may oomp'ise a Sheet of perforated" steel 4suitablyy termed hut yit @may `cor'rsist '-ofla. plurality of igrid bars Eor Similar rmembers-eassemblel to',I

nested With the upper .e'eo'tionl'i 13 olii the `Chamber-12 to provideforuthe inlet 'offthe grain to loe 'cleaned 'and the lowerseeti'on is 4 providedat" the opposite end offthe chamber' Withanfoutlet 16:;the ends'ofthe eliambe 'i beingelosed'platee-l and .18.'v j

A1 revolving drumQO which may bei oonthan; the. chamber-'12' to deline With-the Chamres'the' drum by means of disvksQShaving to theinneruside ofthe drumgone ofr'suoh :disksheingarrangedfat each 'end of the drum andtwo ofsuch dieksrbelngfarranged intermediate the endeofthe drum,.fas.clearly small end 'to the `largetfeild ofthe f drum. At

a one end the shaft 22 i'sjournaile'd in hearings i stru'cted yof Wood or fmetal'is. operatively arf lrangedwithn the Vehairilee'12; The drum is of truste-conical form and ietslightly Smaller hubs y24v ixed tothe shaft andrims vliXed `interior'wallfoithe'thearing281and is slid- :ahly-reeeivedwiil a keyLWay'fSOifor-med;in a y l -4 Vsleeve3 1."`The interioriWallnofthesleeve detail View, partly in section v 4 iend'foff-the shaft 22 thusuconstitutinga jour-v 31 gis smooth and 'receivesa'nd eng-ages one nal for chi end of the shaft. TlrejehaftQQ is* itreely-'rotatable ifvith: reepect to the sleeve 31 fbutf'is constrainedv to :partake of. the. llongitudinal movement .ofi thel "s'ileev'e :and for this i purpose one` end ofrth'e -sleeve aloute Vthe adsjaoent:dskf'andfth other: end of the 'sleeve 'abutsta COIIarSQziedQtO-the shaft. A :'handl'wlieelj' 34 is arranged' on the sleeve 31 fand includesf a'v hub 35 Thaving an annular 1 flange '37t /rotatahly' received' in` an annular tre'ceSS f36 'formedf'in` van 2 enlarged pbrtion: of fthe bearing f 28:y lThe. exterior of "fthe sleeve '31 4and :the interior. :of the f ghub". ofl'the hand iwheel'- are `Correspondingly: :threaded Wherebythe sleeve lconstitutes aiscreW 'and-the lhand* Wheely constitutes 'ai Ttatah'le5-nut "having lwthreaded hearing ieoperahle iwth .the

eonetltute 'the @screenzf Anfrinletfl.fson-fadusted pesitimgithe lock; 11i-115338 heiligr prefY a vided with a flanged rim 39 to facilitate adjustment thereof. It is obvious that when the. lock nut is disengaged from the hand wheel, the hand wheel may be turned to im-v partv longitudinal movement to the sleeve screw 31 which'being fixed to the shaft 22 with respect to longitudinal movement imparts a corresponding longitudinal movement to the shaft 22 and consequently to the revolving drum since the'revolving drum is fixed to the shaft. In this manner the clearance 4or space between the drum and its 1 chamber may be varied to suit conditions.

The shaft 22 is driven at a relatively high rate of speed preferably at approximately 300 R. P. M. by means of a pulley 40 having a hollow shaft 41 fixed to its hub and splined to the shaft 22 to impart the rotary moyement of the pulleyto the vshaft while peryrnitting the shaft to move longitudinally as above described.

A trough 45 preferably in the form of a hopper extends around the perforated portion of the chamber 12 and receiveslthe discharge from this perforated section,` the lower constricted or narrowed end of the trough or hopper having a screw conveyory 46 operating therein,'thelscrew conveyor including a shaft 47 journaled in bearings 48 and drivenata speed of approximately 100 It. P. M. from the hollow shaft 41 by means of chain and sprocket gearing 49. The screw conveyor 46r carries the materials received in the hopper to an outlet 5() which delivers these materials into the revolving screen chamber, designated at 51.

A revolving screen1 designatedgenerally at 55, is arranged in the revolving screen chamberand comprises a frame56 mounted on an elongated sleever 57 by means of vspiders 58, the frame 56 consisting of longitudinal ribs serving to carry a screenor 'reticulated fabric 59.

. A spider at the small end of the revolving screen has inclined arms 59', and has itshub formed with a socket to receive a ball 61 which isconnected to the socket by means of a key 60 to form a universal coupling.

Y of the eccentric 67,`the universal coupling `between the hollow shaft 62 and the revolv- Ball 61 is formed integral with hollow shaft 62 rotatably mounted on a shaft 63 journaled in bearings 64 carried by the frame 10. The hub is also provided with a flange 65 which is connected with one end of the sleeve 57. At the opposite end of the drum .the hub of the spider 50 has an eccentric strap 66 formed thereon and cooperating with an eccentric 67 fixed to the shaft 63.

The hollow vshaft 62 serves to .impart rotary motion to the revolving screen by means j of the universal coupling above described,

while the shaft-63 serves to impart agitatmg or jogging motion to the screen by means ing screen permitting this jogging while at end of which leads into the vinterior 'of the revolving screen, arcap plate 71 being carried by the elbow and abutting the end of the revolving screen to confine the grain delivered to the screen to they interior thereof. It is to be noted that the'elbow 70 which isitself a heavy casting and carried l by the frame is provided with bearings. 72

which rotatably supportthe hollow shaft 62.

hereinabove referred to.

A hopper or trough 75 isarranged below the screen compartment51 and in the lower end of the screen compartment a conveyor operates, being driven from; the conveyor` shaft 77 at approximately 100 R. P. M. by

vmeans of -sprocket gearing 78 `which takes its motion from the shaft 63. -lheinterior of the revolving screen delivers thegrain by means of a frusto conical deflector ,79 to a grain conduitSO which leads olf from the machine.y 7;

In operation, the grain is fed through the inlet 15 into the chamber v12 where it encounters the rapidly revolving drum 2O-` which drags it across the screen or` grid formed bythe lowersection of the chamber 12 removing the beards and hulls and forcing the seeds through the grid orscreen into the trough 45. vThe grain is advancedfrom the small end ofthe frusto conical drum to the large end by means of the spiral flights carried by the periphery of the drumv and during its entire longitudinal travel it is subjectedto the combined action of the re volving drum and grid. The grain with 'the seeds and beards andhulls removed is then discharged into the outlet 16 from whence yit is delivered from the elbow 70 into thek interior of the revolving screen 55, the hullsv and beards andthe seed being delivered into the screen compartment butexteriorly` of the screen by meansof the ,outlet 50 of the trough orhopper 45. The grain within the revolving screen is subjected to a further cleaning action by virtue of the revolving and jogging of the screen accomplished by the hollow sha-ft 62 and its universal coupling and by the shaft 63 and its eccentric,

respectively-- By this action theygrain isA further and completely cleaned and all of the grass seeds or the likeare removed therefrom, the cleaned grain being delivered to the outlet conduit 80 and the hulls and grass and means for jogging said screen including f va` shaft, an eccentric fixed to said shaft and seeds being delivered to the trough or hopper 75, from whichy they are carried 0E bymeansl of the screw conveyor 76.

I claim: 1 i

l. In a machine of the character described, a revolving screen comprising 'an elongated sleeve, a frame,` spiders connecting said frame and said sleeve, means for rotating said screen including a hollow shaft and a universal coupling connecting said-hollow shaft and one of the spiders of said screen,

an eccentric strap carried by another of said spiders and cooperating with said eccentric.

'2. In a machine of the character described,"

a revolving screen and nieans for rotating said screen including a hollow shaft `and a universal Vcoupling connecting said hollow shaft with 'one end of said revolving screen, and means for imparting a jogging motion to said screen including a shaft extending throughsaid hollow kshaft and carrying an eccentric, said screen having an eccentric strap cooperating with said eccentric. f3. In a machine of the' character described,

'a revolving screena sleeve, a universal cougyrate the other end of said screen.

said revolving screen, ay 'shaft' extending through said sleeve, an eccentric carriedby lsaid shaft, an eccentric strap carried vby said screen, and adapted to cooperate with said eccentric, and means for -rotating said screen and shaft at-diiferent speeds, whereby the screen is rotated While being'ag'itated by means of the eccentric.

4.' A device o'fthe class ydescribed com# prisinga revolving screen, a universal coupling connected to one end of said screen, a

said screen, a second shaft extending longitudinally through said screen, and eccentric means mounted on said shaft and adapted t0 5. A device of the class .described compris'- ing a revolving screen, a universal coupling connected to said screen, a hollow shaft connected to said coupling torotate the coupling and screen, a second shaft extending longitudinally through said screen, an eccentric on said second shaftvand a cooperating eccentric strap mounted on said screen.

'- PERRY D. BLAOKDEN hollow shaft for rotating said coupling and.,` s0 

